Editing 1839 in science (section)

==Deaths==
* January 22 – [[Christian Ramsay]], Lady Dalhousie (born [[1786 in science|1786]]), [[Scottish people|Scottish]] [[botanist]].
* April 8 – [[Pierre Prévost (physicist)|Pierre Prévost]] (born [[1751 in science|1751]]), [[Swiss people|Swiss]] [[physicist]].
* June 27 – [[Allan Cunningham (botanist)|Allan Cunningham]] (born [[1791 in science|1791]]), [[English people|English]] botanist and [[List of explorers|explorer]].
* August 28 – [[William Smith (geologist)|William Smith]] (born [[1769 in science|1769]]), English [[geologist]].
* August 10 – [[Sir John St Aubyn, 5th Baronet]] (born [[1758 in science|1758]]), English fossil collector.
* September 29 – [[Friedrich Mohs]] (born [[1773 in science|1773]]), [[German people|German]] [[mineralogist]].
* October 24 – Sir [[William Charles Ellis]] (born [[1780 in science|1780]]), English psychiatric physician.
* November 15 – [[William Murdoch]] (born [[1754 in science|1754]]), Scottish-born [[inventor]] and [[technician]].
* December 24 – [[Davies Gilbert]] (born [[1767 in science|1767]]), English promoter of science.